Integrated single-cylinder engine body

Abstract

The utility model discloses an integrated single-cylinder engine body which comprises a single-cylinder engine body main body and a main bearing cover, a plurality of parallel and unclosed cavities are arranged in the single-cylinder engine body main body, and each cavity penetrates through the outer walls of the two opposite sides of the single-cylinder engine body main body. First installation and maintenance windows are formed in the positions, penetrating through the cavities, of the single-cylinder engine body respectively, a second installation and maintenance window is formed in the side wall of one side of the single-cylinder engine body, and each main bearing cover and each arc-shaped groove in the single-cylinder engine body form a crankshaft installation hole. The crankshaft mounting hole is formed in the middle of the single-cylinder engine body and penetrates through all the cavities, and a cylinder sleeve mounting hole is formed in the top of the single-cylinder engine body; the single-cylinder engine body is of an integrally-formed structure. On the basis that original functions of the single-cylinder engine can be met, the crankcase and the cylinder body are designed to be of an integrated structure, bolts of the cylinder body are removed, reliability of the engine body is improved, and workload of follow-up manufacturing and machining is reduced.

Description

Technical Field

[0001] The utility model relates to an integrated single-cylinder machine body, belonging to the field of machinery. Background Art

[0002] The existing single-cylinder engine body is composed of two separate parts (i.e., the crankcase at the bottom and the cylinder block at the top), which are previously fixed together by cylinder block bolts. Therefore, the two parts need to be manufactured and processed separately, and many matching relationships such as sealing need to be considered between the parts. The installation is cumbersome and inefficient. In addition, careless or wrong installation will lead to problems such as no sealing. Summary of the invention

[0003] The technical problem to be solved by the utility model is: how to simplify the structure of the single-cylinder engine body, reduce the installation steps and improve the installation efficiency.

[0004] In order to solve the above technical problems, the technical solution of the utility model is to provide an integrated single-cylinder engine body, which is characterized in that it includes a single-cylinder engine body main body and a main bearing cover, a plurality of parallel and non-enclosed cavities are arranged in the single-cylinder engine body main body, each cavity penetrates the outer walls on opposite sides of the single-cylinder engine body main body, and a first installation and maintenance window is formed on the single-cylinder engine body main body at the penetration position of each cavity, a second installation and maintenance window is provided on the side wall on one side of the single-cylinder engine body main body, and an arc-shaped Grooves, the main bearing cap is an arc groove structure, each main bearing cap and each arc groove on the single-cylinder engine body form a crankshaft mounting hole, the crankshaft mounting hole is arranged in the middle position of the single-cylinder engine body and passes through each cavity, and a camshaft mounting hole and a turning machine mounting hole are arranged on the side wall of each cavity above the crankshaft mounting hole, two large holes are arranged on the side walls on both sides of the single-cylinder engine body below the crankshaft mounting hole, a plurality of balance shaft mounting holes are arranged on the side walls in the middle of each cavity in the single-cylinder engine body, and a cylinder liner mounting hole is arranged on the top of the single-cylinder engine body; the single-cylinder engine body is an integrated molding structure.

[0005] Preferably, the single-cylinder engine body is provided with a row of operating holes penetrating the single-cylinder engine body, each main bearing cover is respectively arranged in its own operating hole and is fastened to the single-cylinder engine body; one large hole is located below the operating hole, and another large hole is located below the second installation and maintenance window.

[0006] Preferably, it also includes a sleeve, which is arranged in the operating hole; one end of each main bearing cover is connected to one side of the operating hole, and the sleeve is arranged between the other end of the main bearing cover and the other side of the operating hole; the single-cylinder engine body and the main bearing cover are fastened together by the main bearing cover bolts, and the sleeve is sleeved on the main bearing cover bolts.

[0007] Preferably, one end of the main bearing cap bolt passes through the other side of the single-cylinder engine body and the main bearing cap in sequence and is threadedly connected to the side wall of one side of the operating hole and the main bearing cap in the operating hole, and the other end of the main bearing cap bolt is arranged on the outside of one side of the single-cylinder engine body.

[0008] Preferably, a plurality of bottom fixing bolt mounting holes are provided at the bottom of the main body of the single-cylinder engine and below the first mounting and inspection window.

[0009] Preferably, the first installation and inspection window located at the bottom of the main body of the single-cylinder engine is recessed inwardly to form an installation space for installing bolts on the bottom fixing bolt installation hole.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The structure of the utility model does not need to be processed separately, does not need to use cylinder body bolts, and does not need to consider the matching relationship between the original two components. The main bearing cap bolts are only used to fix the main bearing cap.

[0012] On the basis of being able to meet the original functions of the single-cylinder engine, the utility model designs the crankcase and the cylinder block into an integrated structure, optimizes the existing engine body structure, removes the cylinder body bolts, improves the reliability of the engine body, and reduces the workload of subsequent manufacturing and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of an integrated single-cylinder engine body (1);

[0014] Figure 2 It is a plan view of one side of an integrated single-cylinder engine body;

[0015] Figure 3 A three-dimensional diagram of an integrated single-cylinder engine body (2);

[0016] Figure 4 It is a three-dimensional diagram (3) of an integrated single-cylinder engine body. DETAILED DESCRIPTION

[0017] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0018] The utility model provides an integrated single-cylinder machine body, such as Figure 1-Figure 4 As shown, it includes a single-cylinder engine body 1, a main bearing cover 2, a main bearing cover bolt 3, and a sleeve 4. Multiple main bearing covers 2 are connected to one side surface of the single-cylinder engine body 1 to form a crankshaft mounting hole 006. The single-cylinder engine body 1 and the main bearing cover 2 are fastened together by the main bearing cover bolt 3.

[0019] In this embodiment, one end of the main bearing cap bolt 3 passes through one side of the single-cylinder engine body 1 and is threadedly connected to the main bearing cap 2, so that the crankshaft mounting hole 006 formed between the single-cylinder engine body 1 and the main bearing cap 2 is firm and not separated.

[0020] The side of the single-cylinder engine body 1 located at the main bearing cap bolt 3 is defined as the front side.

[0021] The main bearing cap 2 is an arc-shaped groove structure, that is, the bottom surface of the groove is an arc-shaped structure; a plurality of parallel and unclosed cavities are provided in the main body 1 of the single-cylinder engine body (three cavities are provided in the present utility model), a second installation and maintenance window 012 is provided on the side wall of one side (the right side in the figure) of the main body 1 of the single-cylinder engine body, an arc-shaped groove is provided on the side wall of the other side (the left side in the figure) of the main body 1 of the single-cylinder engine body and the side walls of each cavity in the main body 1 of the single-cylinder engine body, and the arc-shaped groove structure of each main bearing cap 2 and the arc-shaped groove form a circular crankshaft installation hole 006 for installing the crankshaft. The crankshaft installation hole 006 runs through the side wall of each cavity. A plurality of first installation and maintenance windows 008 are provided on the outer wall of each cavity located at both ends (the front and rear positions in the figure) of the main body 1 of the single-cylinder engine body. A plurality of bottom fixing bolt installation holes 009 are provided below the first installation and maintenance window 008.

[0022] The first installation and inspection window 008 at the bottom of the single-cylinder engine body 1 is recessed inward to form an installation space for installing bolts on the bottom fixing bolt installation hole 009 .

[0023] A row of operating holes 010 penetrating the single-cylinder engine body 1 is provided in the single-cylinder engine body 1, and each sleeve 4 and main bearing cap 2 are respectively arranged in their respective operating holes 010. The operating holes 010 are convex-shaped structures.

[0024] A camshaft mounting hole 003 and a turning machine mounting hole 004 are provided on the side walls of each cavity, above the operating hole 010; two large holes 011 are provided on the side walls on both sides of the single-cylinder engine body 1 (i.e., the outer walls of the two outermost cavities); one large hole 011 is located below the operating hole 010, and the other large hole 011 is located below the second installation and maintenance window 012; a plurality of balance shaft mounting holes 007 are provided on the side walls inside the single-cylinder engine body 1 and located in the middle of each cavity.

[0025] The main bearing cap 2 is arranged in the side hole of the single-cylinder engine body 1, and an arc-shaped groove is arranged on the inner wall of one side of the side hole of the single-cylinder engine body 1. A sleeve 4 is arranged between the inner wall of the other side of the side hole of the single-cylinder engine body 1 and the main bearing cap 2, and the sleeve 4 is sleeved on the main bearing cap bolt 3. One end of the main bearing cap bolt 3 passes through the side wall of one side of the single-cylinder engine body 1 and is arranged in the operation hole 010, and then sleeve 4 is sleeved, and then passes through the main bearing cap 2 and is threadedly connected with the side wall of one side of the operation hole 010, and the main bearing cap bolt 3 is also threadedly connected with the main bearing cap 2 (or one end of the main bearing cap bolt 3 is threadedly connected with the side wall of one side of the operation hole 010, and is also threadedly connected with the sleeve 4, and the sleeve 4 is used to tighten the main bearing cap 2), and the other end of the main bearing cap bolt 3 is located outside the single-cylinder engine body 1.

[0026] The top of the single-cylinder engine body 1 is provided with a cylinder sleeve mounting hole 001 for mounting the cylinder body. The cylinder sleeve mounting hole 001 is provided at the top of the cavity located in the middle position.

[0027] The single-cylinder engine body 1 of the utility model can still meet the original function. The top of the single-cylinder engine body 1 is also provided with an oil injection hole 002, and the side of the single-cylinder engine body 1 is located between the inspection window 012 and the camshaft installation hole 003 and is also provided with an operation installation hole 005.

Claims

1. An integrated single-cylinder engine body, characterized in that: The invention comprises a single-cylinder engine body (1) and a main bearing cover (2), wherein a plurality of parallel and non-enclosed cavities are arranged in the single-cylinder engine body (1), each cavity penetrates the outer wall of the single-cylinder engine body (1) on opposite sides, and a first installation and maintenance window (008) is formed on the single-cylinder engine body (1) at the penetration position of each cavity, a second installation and maintenance window (012) is arranged on the side wall of one side of the single-cylinder engine body (1), an arc groove is arranged on the side wall of the other side of the single-cylinder engine body (1) and on the side wall of each cavity in the single-cylinder engine body (1), and the main bearing cover (2) is an arc groove structure, and each main bearing cover (2) is connected to the single-cylinder engine body (1). Each arc-shaped groove forms a crankshaft mounting hole (006), and the crankshaft mounting hole (006) is arranged in the middle of the single-cylinder engine body (1) and passes through each cavity. A camshaft mounting hole (003) and a turning machine mounting hole (004) are arranged on the side wall of each cavity above the crankshaft mounting hole (006). Two large holes (011) are arranged on the side walls of both sides of the single-cylinder engine body (1) below the crankshaft mounting hole (006). A plurality of balance shaft mounting holes (007) are arranged on the side walls in the middle of each cavity in the single-cylinder engine body (1), and a cylinder liner mounting hole (001) is arranged on the top of the single-cylinder engine body (1); the single-cylinder engine body (1) is an integrally formed structure.

2. An integrated single-cylinder engine body as claimed in claim 1, characterized in that: The single-cylinder engine body (1) is provided with a row of operating holes (010) penetrating the single-cylinder engine body (1); each main bearing cap (2) is respectively arranged in its own operating hole (010) and is fastened to the single-cylinder engine body (1); a large hole (011) is located below the operating hole (010), and another large hole (011) is located below the second installation and maintenance window (012).

3. An integrated single-cylinder engine body as claimed in claim 2, characterized in that: It also includes a sleeve (4), which is arranged in the operating hole (010); one end of each main bearing cover (2) is connected to one side of the operating hole (010), and the sleeve (4) is arranged between the other end of the main bearing cover (2) and the other side of the operating hole (010); the single-cylinder engine body (1) and the main bearing cover (2) are fastened and connected by the main bearing cover bolts (3), and the sleeve (4) is sleeved on the main bearing cover bolts (3).

4. An integrated single-cylinder engine body as claimed in claim 3, characterized in that: One end of the main bearing cap bolt (3) passes through the other side of the single-cylinder engine body (1) and the main bearing cap (2) in sequence and is threadedly connected to the side wall of one side of the operating hole (010) and the main bearing cap (2) in the operating hole (010); the other end of the main bearing cap bolt (3) is arranged on the outside of one side of the single-cylinder engine body (1).

5. The integrated single-cylinder engine body according to claim 1, characterized in that: A plurality of bottom fixing bolt installation holes (009) are provided at the bottom of the single-cylinder engine body (1) and below the first installation and inspection window (008).

6. An integrated single-cylinder engine body as claimed in claim 5, characterized in that: The first installation and inspection window (008) located at the bottom of the single-cylinder engine body (1) is recessed inwards to form an installation space for installing bolts on the bottom fixing bolt installation hole (009).

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